There are a few ways to change the default PDF viewer on Android. The first way is to open the Settings app and select “Default apps.” Then, select “PDF” and change it to “PDF Reader.” The second way is to open the Google Play Store and search for “PDF Reader.” If you don’t have the Google Play Store installed on your Android device, you can download it from the Google Play website. Once you have downloaded PDF Reader, open it and select “Open in new window.”
